ENGLISH
SERVICE MANUAL
50
909 6424 000(3)2007-12 BR 601 / BR 651 / BR 751 / BR 751 C
PARKING BRAKE SYSTEM
ELECTROMAGNETIC BRAKE DISASSEMBLY/ASSEMBLY (Machines up to January 2007)
Disassembly
Drive the machine to the appointed disposal area, and empty the recovery water tank (58) with the hose (22).
Empty the solution/washing water tank (59) with the tap (36).
Place the machine on a hoisting system (if available). Otherwise, drive the machine on a level fl oor.
Turn the ignition key (12) to "0".
Carefully lift the tank assembly (60).
Disconnect the battery connector (63).
Apply proper wedges to right and left rear wheels (43), so that the machine cannot move when the electromagnetic brake (39)
is disassembled.
Disconnect the electromagnetic brake connector (A).
Disconnect the wiring harness (B) from the clamps (C).
Remove the self-locking nut (D) and the unlocking handwheel (E).
Remove the screws (F), then remove the cover (G).
Remove the electromagnetic brake mounting screws (H).
Remove the electromagnetic brake (I).
Remove the brake pad (J).
Assembly
Assemble the components in the reverse order of disassembly, and note the following:
Before assembling the cover (G), check the gasket (L) for dirt, integrity and correct positioning.
To activate the electromagnetic brake, the self-locking nut (D) must be fl ush with the threaded tie rod (K), while the
unlocking handwheel (E) must be unscrewed until it contacts the nut (D) (as shown in the fi gure).
WARNING!
When the unlocking handwheel (E) is unscrewed, the electromagnetic brake is activated; when the unlocking
handwheel (E) is screwed, the electromagnetic brake is deactivated.
Check the parking brake (see the procedure in the relevant paragraph).
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